5402123131 has 4 divisors (see below), whose sum is σ = 5493684600. Its totient is φ = 5310561664.

The previous prime is 5402123119. The next prime is 5402123159. The reversal of 5402123131 is 1313212045.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5402123131 - 2¹⁹ = 5401598843 is a prime.

It is a super-2 number, since 2×5402123131² = 58365868644970486322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5402123171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45780646 + ... + 45780763.

It is an arithmetic number, because the mean of its divisors is an integer number (1373421150).

Almost surely, 2^5402123131 is an apocalyptic number.

5402123131 is a deficient number, since it is larger than the sum of its proper divisors (91561469).

5402123131 is an equidigital number, since it uses as much as digits as its factorization.

5402123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91561468.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 5402123131 is about 73499.1369405111. The cubic root of 5402123131 is about 1754.6405414191.

Adding to 5402123131 its reverse (1313212045), we get a palindrome (6715335176).

The spelling of 5402123131 in words is "five billion, four hundred two million, one hundred twenty-three thousand, one hundred thirty-one".